After years of research and development, the Troy Lee Designs Team introduced the A1 mountain bike helmet in 2013. Here at TLD, styling, graphics, fit, function and strength are key in everything we create. This lightweight, fully encapsulated all-mountain helmet utilizes maximum strength and dimension to keep you covered in all riding conditions. Whether you're charging single track, riding dirt jumps or grinding out miles on the XC bike, the A1 helmet offers the premium fit, coverage and style you want. A1 DRONE is perfect for the MTB rider just starting out with mountain biking or eMTB or the expert rider on a budget Helmet visor Innovative break-away anodized alloy visor screws help reduce the likelihood snagging during impact Buckle/strap Secure buckle combined with a strap system using premium fabrics for a soft yet durable feel on your face and adjustable clasp divider can be adjusted to fit a variety of head shapes Retention system Adjustable retention fit system with easy to spin dial. In addition 3 way adjustable system to position the cradle higher or lower across the back of your neck Ventilation and safety Durable yet lightweight outer microshell with EPS impact material matched to internal ventilation channels gives you performance and comfort to enjoy your mountain bike ride What's in the Box A1 DRONE comes with helmet, custom A1 carrying bag, spare comfort liner Velcro dots, emergency ID sticker, sticker sheet, manual